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| <html> |
| <head> |
| <meta charset="utf-8"> |
| <!-- |
| |
| /* |
| ** Copyright (c) 2012 The Khronos Group Inc. |
| ** |
| ** Permission is hereby granted, free of charge, to any person obtaining a |
| ** copy of this software and/or associated documentation files (the |
| ** "Materials"), to deal in the Materials without restriction, including |
| ** without limitation the rights to use, copy, modify, merge, publish, |
| ** distribute, sublicense, and/or sell copies of the Materials, and to |
| ** permit persons to whom the Materials are furnished to do so, subject to |
| ** the following conditions: |
| ** |
| ** The above copyright notice and this permission notice shall be included |
| ** in all copies or substantial portions of the Materials. |
| ** |
| ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
| */ |
| |
| --> |
| <link rel="stylesheet" type="text/css" href="../unit.css" /> |
| <script type="application/x-javascript" src="../unit.js"></script> |
| <script type="application/x-javascript" src="../util.js"></script> |
| <script type="application/x-javascript"> |
| |
| Tests.startUnit = function () { |
| var canvas = document.getElementById('gl'); |
| var gl = wrapGLContext(getGLContext(canvas)); |
| return [gl]; |
| } |
| |
| Tests.testReadPixels = function(gl) { |
| // we can't know if this is going to fail because of negative width |
| // or because the buffer size doesn't match the dimensions. |
| assertSomeGLError(gl, "negative width", |
| function(){gl.readPixels(0,0,-1,1, gl.RGBA, gl.UNSIGNED_BYTE, |
| new Uint8Array(4));}); |
| assertSomeGLError(gl, "negative height", |
| function(){gl.readPixels(0,0,1,-1, gl.RGBA, gl.UNSIGNED_BYTE, |
| new Uint8Array(4));}); |
| assertOk("negative x", |
| function(){gl.readPixels(-1,0,1,1, gl.RGBA, gl.UNSIGNED_BYTE, |
| new Uint8Array(4));}); |
| assertOk("negative y", |
| function(){gl.readPixels(0,-1,1,1, gl.RGBA, gl.UNSIGNED_BYTE, |
| new Uint8Array(4));}); |
| assertOk("height > backbuffer height", |
| function(){gl.readPixels(0,0,16,17, gl.RGBA, gl.UNSIGNED_BYTE, |
| new Uint8Array(16*17*4));}); |
| assertOk("width > backbuffer width", |
| function(){gl.readPixels(0,0,17,16, gl.RGBA, gl.UNSIGNED_BYTE, |
| new Uint8Array(17*16*4));}); |
| assertOk("width, height = 0", |
| function(){gl.readPixels(0,0,0,0, gl.RGBA, gl.UNSIGNED_BYTE, |
| new Uint8Array(0));}); |
| // we can't know if this is going to fail because of negative width |
| // or because the buffer size doesn't match the dimensions. |
| assertSomeGLError(gl, "bad format", |
| function(){gl.readPixels(0,0,1,1, gl.FLOAT, gl.UNSIGNED_BYTE, |
| new Uint8Array(4*4));}); |
| // we can't know if this is going to fail because of negative width |
| // or because the buffer size doesn't match the dimensions. |
| assertSomeGLError(gl, "bad type", |
| function(){gl.readPixels(0,0,1,1, gl.ALPHA, gl.FLOAT, |
| new Uint8Array(1*4));}); |
| } |
| |
| Tests.testReadPixelsSOPIMG = function(gl) { |
| var img = document.getElementById("i"); |
| while (!img.complete) {} |
| var tex = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_2D, tex); |
| // SOP failure |
| assertThrowNoGLError(gl, "throw because img is from another domain", |
| function(){gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, img);}); |
| gl.bindTexture(gl.TEXTURE_2D, null); |
| assertOk("canvas still origin-clean", |
| function(){gl.readPixels(0,0,1,1, gl.RGBA, gl.UNSIGNED_BYTE, |
| new Uint8Array(4));}); |
| gl.deleteTexture(tex); |
| } |
| Tests.testReadPixelsSOPCanvas = function(gl) { |
| var img = document.getElementById("i"); |
| while (!img.complete) {} |
| var c = document.getElementById("c"); |
| c.getContext("2d").drawImage(img, 0, 0); |
| assertFail("canvas throws because not origin clean", |
| function(){c.getContext("2d").getImageData(0,0,1,1);}); |
| var tex = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_2D, tex); |
| // SOP failure |
| assertThrowNoGLError(gl, "throw because canvas is not origin clean", |
| function(){gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, c);}); |
| gl.bindTexture(gl.TEXTURE_2D, null); |
| assertOk("canvas still origin-clean", |
| function(){gl.readPixels(0,0,1,1, gl.RGBA, gl.UNSIGNED_BYTE, |
| new Uint8Array(4));}); |
| gl.deleteTexture(tex); |
| } |
| |
| Tests.endUnit = function(gl) { |
| } |
| |
| </script> |
| </head><body> |
| <canvas id="gl" width="16" height="16"></canvas> |
| <canvas id="c" width="128" height="128"></canvas> |
| <img id="i" src="http://www.opengl.org/img/opengl_logo.jpg"> |
| </body></html> |
